Browser-based developer utilities
Everyday Developer Tools, All in One Place.
Developer Tool Box gives you practical browser utilities for formatting, encoding, decoding, conversion, generators and everyday software development workflows.
Popular tools
JSON Formatter
Format, validate and inspect JSON input.
Development
Base64 String Converter
Encode and decode Base64 text safely in your browser.
Converter
UUID Generator
Generate RFC-compatible UUID values for development and testing.
Crypto
URL Encoder
Encode or decode URL components and query-safe strings.
Web
Hash Text
Create SHA-256 hashes from text using browser cryptography.
Crypto
Tool categories
Crypto
Hashing, identifiers, random values and security-adjacent utilities.
2 live tools
Converter
Format and convert strings, numbers, files and structured data.
1 live tools
Web
Utilities for URLs, browser data, HTTP, tokens and web development.
1 live tools
Development
JSON, XML, YAML, SQL, regex, Docker and everyday coding helpers.
1 live tools
Need the complete directory?
The full tools directory includes live tools and clearly labeled previews while new utilities are completed.
Why use Developer Tool Box?
The site is structured around permanent tool URLs, practical examples, mobile-friendly interfaces and local processing where the implementation supports it. Sensitive input should still be treated carefully, especially for cryptographic, token, credential and file tools.
How it works
Choose a tool, enter or upload data when supported, then copy, download or use the result. Each completed tool page explains limitations and processing behavior.
FAQ
Developer Tool Box is free to use locally. Account registration is not required. The current pilot tools run in the browser, while future server or hybrid tools will be labeled clearly before release.